emoji unicode to emoji-cheat-sheet.com codes

emoji.rb

#!/usr/bin/env ruby

EMOJI_NAME_TO_CODEPOINT = {
  "1F604" => :smile,
  "1F606" => :laughing,
  "1F60A" => :blush,
  "1F603" => :smiley,
  "263A"  => :relaxed,
  "1F60F" => :smirk,
  "1F60D" => :heart_eyes,
  "1F618" => :kissing_heart,
  "1F61A" => :kissing_face,
  "1F633" => :flushed,
  "1F625" => :relieved,
  "1F60C" => :satisfied,
  "1F601" => :grin,
  "1F609" => :wink,
  "1F61C" => :wink2,
  "1F61D" => :tongue,
  "1F612" => :unamused,
  "1F605" => :sweat_smile,
  "1F613" => :sweat,
  "1F629" => :weary,
  "1F614" => :pensive,
  "1F61E" => :dissapointed,
  "1F616" => :confounded,
  "1F628" => :fearful,
  "1F630" => :cold_sweat,
  "1F623" => :persevere,
  "1F622" => :cry,
  "1F62D" => :sob,
  "1F602" => :joy,
  "1F632" => :astonished,
  "1F631" => :scream,
  "1F62B" => :tired_face,
  "1F620" => :angry,
  "1F621" => :rage,
  "1F62A" => :sleepy,
  "1F60B" => :yum,
  "1F637" => :mask,
  "1F60E" => :sunglasses,
  "1F635" => :dizzy_face,
  "1F47F" => :imp,
  "1F608" => :smiling_imp,
  "1F610" => :neutral_face,
  "1F636" => :no_mouth,
  "1F607" => :innocent,


  "1F4A9" => :poop,
  "1F44D" => :thumbsup,
  "1F44E" => :thumbsdown,

  "1F479" => :japanese_ogre


}

remapped_codepoints = $stdin.codepoints.flat_map do |codepoint|
  emoji = EMOJI_NAME_TO_CODEPOINT[codepoint.to_s(16).upcase]
  emoji ? ":#{emoji}:".codepoints.entries : codepoint
end

puts remapped_codepoints.pack("U*")

I like the emoji support on iOS and Mountain Lion, but I get disappointed when my carefully chosen iconography does not appear in Chrome and assorted apps. My thought is that an app might want to convert the obscure Emoji Unicode (warning: this is a big page) into the more friendly codes used by GitHub and friends from the Emoji Cheat Sheet.

This script reads unicode from STDIN and handles that code swap. It doesn't support all the emoji because, it turns out, there's a lot of them.

GitHub won't allow me to post raw Emoji in this form :-( but usage, you can imagine, looks like this:

mark:~ $ echo "this code is DOO_DOO_EMOJI." | Projects/rack-emoji/emoji.rb
this code is :poop:.